DSM-G600, DNS-3xx and NSA-220 Hack Forum

Unfortunately no one can be told what fun_plug is - you have to see it for yourself.

You are not logged in.

Announcement

#1 2010-12-12 16:33:45

cnitso
New member
Registered: 2010-12-12
Posts: 3

Perfomance Issue

I have 2 DNS-323 in my setup and I need to upgrade one of the DNS-323 2 x 500GB drives with 2 x 2TB drives (WD20FASS) in a RAID 1 configuration.  I thought the easiest way to do this would be to install the 2 TB drives in the second DNS-323 and copy the data between the 2 DNS-323's.  However, I'm seeing strange performance issues.  Here is a summary of what I noticed:

1. Copy from DNS-323 #1 to PC (i.e. read) = 29 MB/sec

2. Copy from PC to DNS-323 #2 (i.e. write) = 14 MB/sec

3. Copy from DNS-323 #1 to DNS-323 #2 = < 1 MB/sec

4. Simultaneously copy from #1 to PC and copy from PC to #2 I get 22 MB/s and 12 MB/s speeds respectively. 

I'm copying home video files all speeds are reported by Win7.

Why is there a huge performance hit when copying directly between the 2 DNS=323s?  If it matters, I have a Linksys eg0008w 1 Gb switch, DHCP server is a Linksys WRT54G 100 Mbs router/switch, i'm using jumbo frames with 9000 mtu.

Last edited by cnitso (2010-12-12 17:43:56)

Offline

 

#2 2010-12-13 14:57:41

fordem
Member
Registered: 2007-01-26
Posts: 1938

Re: Perfomance Issue

You're not actually copying from one NAS directly to the other - not unless you're using ftp, or, you've hacked the NAS using fun_plug - you're transferring data from NAS1 to the PC and then to NAS2.

I suspect the question here is really why does your PC not transfer the data as would be expected - and that I have no answer for.

Offline

 

Board footer

Powered by PunBB
© Copyright 2002–2010 PunBB